Two new rodent fossils were discovered in the arid highlands of southern Bolivia by researchers from Case Western Reserve University School of Medicine and Universidad Autónoma Tomás Frías.
http://archaeologynewsnetwork.blogspot.com/2011/08/fossils-of-forest-rodents-found-in.html
http://archaeologynewsnetwork.blogspot.com/2011/08/fossils-of-forest-rodents-found-in.html